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 Username Post Silverado 1500 48 P0300 code at high RPM only??1996 Chevrolet Astro Engine and Engine Cooling TSB Details ;Yesterday on the way to work my 00 Chevrolet Silverado 1500 4WD with the 48L V8 Vortec engine started flashing a check engine light I read it and it was a P0300 Random/Multiple Misfire I had experienced a slightly rough idle previously (nothing

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P0300 code chevy silverado 4.8-I checked the codes and the only one was the P0300 code (multiple/random cylinder misfire) New Face For 21 Chevy Colorado Debuts On Hall Racing ZR2 By Zane Started 22 Following a Hopeful Stretch UAW Now Says Strike Deal MovingOBDII Code P0300 is defined as a Random, Multiple Misfire Detected Driving with this trouble code is not recommended A vehicle with this code should be taken in to a repair shop for diagnosis Find a shop

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The P0300 Chevy trouble code will trigger the Silverado's service engine soon light If you got a P302 or something similar with the P0300, it may be a good idea to check and see if there is any damage or failure from your ignition componentsBad oxygen sensor(s) Engine timeoff;I hooked up the OBDll reader and the code read P0300 which says it's a misfire My 06 savana 2500 48 started doing that and i

Low compression from the engine;03 Chevy Silverado 1500 LS 4WD 53L V8 P0300 Misfire Code 2 Answers I have a check engine light on for over two years It has been two P0300 misfire codes In the past 2 years I have changed out all 8 plugs and wires, fuel pump, fuel filter, mass air flow sensor, clea What is P0300 code on Silverado 01?

Cuando se detecta el código DTC P0300 en tu vehículo Chevy significa que el Módulo del control del motor (ECM) ha encontrado que uno de los cilindros del motor no está realizando su función de manera correctaUna característica de este código OBDII es que no se refiere a ningún cilindro en particular, ya que un diagnostico P0300 indica un fallo de encendido aleatorio(Topic#2164) jawzzy Member Posts 8 Reg1996 Chevrolet Express Electrical System TSB Details ;

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Misfiring on a 04 Chevrolet 1500 silverado I have recently (this weekend 2/14/09) changed the alternator, spark plugs, spark plug wires on my truck but I am still having problems The truck is giving a 'battery not charging' read out across the dash as the needle fluctuates between 1014V P0300 is a general and random misfire code, which means that the code is not going to tell you which cylinder is causing the misfire Something is causing cylinders to misfire at random, which is a lot less cut and dry than a cylinder specific misfire code See Also P0300 Chevy OBDII Code Silverado P0300 OBDII Code Symptoms The P0300 Chevy trouble code will trigger the Silverado'sCode P0300 is a generic OBD code with a standard definition from the Society of Automotive Engineers (SAE) SAE refers to the code as u0022Random Misfire Detectedu0022 But on many Chevy vehicles, when using an OEMlevel scan tool, the code may come up as u0022Multiple Cylinder Misfire Detectedu0022

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P0300 code for 04 Chevy Express 2500 48 V8 (04 Chevrolet Express 2500) I get flashing P0300 flashing code when driving above 60 mph P0300 code for 04 Chevy Express 2500 48 V8 04 brstate fix code p0030 p015b p0130 p0132 p0134 engine light on chevy, chevrolet, gmc, buick, cadillac Hi, been awhile since I've been on here but here's my story I bought a 10 Silverado 48 lt with 67,000 miles on it and a friend of mine was scanning it with his HP tuners and while I was driving truck today it came up code pending for multi cylinder misfire p0300 Well he went home told me it Chevrolet code P0300 indicates that one or more cylinders are experiencing misfires A misfire occurs when an insufficient amount of fuel is burning in a cylinder The efficient burning of fuel is essential to engine operation as the combustion of fuel is what provides the energy to power the engine in your Chevrolet

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In this video we discover common causes for the codes P0300 and P00 and learn a lesson about being more methodical in diagnosing these issues before cleari08 Chevrolet Silverado P0174, P0300 Truck was dropped off with check engine light concern Pulled codes and found all cylinders misfiring one time or another Replaced plugs with ac delco, cleared codes and test drove Engine light came on after it started to flash while going down the road, and the traction control light also on Chevy Silverado misfire Fix Chevy Silverado misfire Some Chevy Silverado owners with the 48L may encounter an intermittent P0300 misfire trouble code, along with excessive emissions, poor idle quality, hesitation, and stalling You would normally start by checking your Chevy Silverado fuel trim with a scan tool

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 The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring Start by checking for intake leaks; P0300 code for 04 Chevy Express 2500 48 V8 04 Chevrolet Express 2500 Asked by ufixit in Oxford, MI on I get flashing P0300 flashing code when driving above 60 mph New plus and wires, No problems with start, idle or excelleration, vacum checks ok, yet when I use Actron scanner to clear code and leave attached while 14,947 Answers Re 02 Chevy Silverado po300 po449 codes Trouble Code P0300 Multiple Cylinder Misfire Detected Possible Causes Base engine mechanical fault that affects one or more cylindersFuel delivery component fault that affects more than 1 cylinderEVAP system problem or the EVAP canister is fuel saturatedEGR valve is stuck open or

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The following TSBs of Chevrolet are related to DTC P0300 1995 Chevrolet Cavalier Engine and Engine Cooling TSB Details ;P0300 Random/ Multiple miss fire, Generally speaking the 02 sensors are not directly connected to this code Now depending on the engine if you get P0300 P0132 any other code in the 1 hundreds, yes you could say the 02 sensors could be an issue, but as the one gut said, random or mult, miss fire, Start's with / but not limited to, bad or worn Spark plugs, bad or clogged injectors, Chevy Silverado misfire Fix Chevy Silverado misfire Some Chevy Silverado owners with the 48L may encounter an intermittent P0300 misfire trouble code, along with excessive emissions, poor idle quality, hesitation, and stalling You would normally start by checking your Chevy Silverado fuel trim with a scan tool

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 P0300 code Chevy Truck Forum Silverado Sierra GMC Truck Forums P0300 code , 1149am ok fellas, i really need some input on this problem my truck is a 97 silverado with the vortec 50 and 4L60E tranny problem is a horrible miss in the motor engine light was not on but hooked my scanner up and the P0300 code came up i1996 Chevrolet Express Engine and Engine Cooling TSB Details The vehicle is a 03 Chevy Silverado 2500hd, 60 V8, 4×4, 193,000 miles The issues is at highway speeds under load the check engine light will flash The truck runs great and the light does not come on during normal driving The truck had a complete tune up done by me roughly 15k miles ago I replaced the plugs and wires with Ac Delco units

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 04 48 silverado code P0300 Runs ruff at idle run down the road it runs great come to an idle after running it idles much better Shut it off wait 2 min and restart it idles ruff until I get on down the road Runs good at high speed no break down at all Engine light only comes on only at idleThere are also some not so common things that may cause the engine misfire which could result in a P0300 code stored in the computer Blown head gasket (coolant inside the combustion chamber), cylinder temperature too  P0308 CHEVROLET code tech notes The P0308 code means that the cylinder 8 is misfiring or is randomly misfiring Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 8 If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes"

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 1,281 Posts #17 Re Re 48L with P0300 Code, Need HELP!I have a 02 chevy silverado 48 idles rough, has two codes, P00, P0300 can you help me? Chevy Silverado P0308 Definition P0308 is a cylinder specific misfire code, which means that cylinder 8 is misfiring and causing it An important thing to understand when finding the location of cylinder 8 is that it's going to be the eighth cylinder in the firing order Silverado P0308 OBDII Code Symptoms The P0308 trouble code will trigger the Silverado's service engine soon

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 P0300 Random misfire while under load Maintenance/Repairs Duray90 , 442pm #1 04 GMC Sierra 2500 HD, 227,000 miles 60L V8 While driving up hills or increasing load, the CEL will flash multiple times, I pull over as I know CEL flashing is not good I turn the truck off, allow it to sit for a few minutes, whip out the code1996 Chevrolet Cavalier Engine and Engine Cooling TSB Details ;Engine Misfire Chevrolet Silverado 1500 48 L 255 hp Gas 21 Very difficult to diagnose What is an Engine Misfire?

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 With And Without Misfire Codes A misfire condition that sets a diagnostic trouble code (P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308 ) and thus illuminates the check engine light is one that is usually easy to diagnose and repairIntake gaskets are a common cause of multicylinder misfiring If no leak is found, the next step is to replace the spark plugs If the problem persists, more tests need to be done to diagnose the problem, see "Possible Causes" Page 1 of 3Testing a Misfire Code (P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308) on GM 43L, 50L and 57L Random Misfire Tests Rough Idle Tests Multiple Misfire Tests Check Engine Light is On with a Misfire Code

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Worn out coils or plug wires;Im getting code p0300 04 Chevrolet Silverado 2500 HD Chevy Silverado P0306 Definition P0306 is a cylinder specific misfire code, which means that Cylinder 6 is misfiring and causing it An important thing to understand when finding the location of Cylinder 6 is that it's going to be the sixth cylinder in the firing order Chevy Silverado P0300 indicates that two or more cylinders are experiencing misfires A misfire occurs when an insufficient amount of fuel is burned in a cylinder The efficient burning of fuel is essential to engine operation as the combustion of fuel

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Common Causes of P0300 Code Chevy Silverado Although there are many reasons why you may get the P0300 code, but here are the most common causes Worn out or faulty plugs;Intake gaskets are a common cause of multicylinder misfiring If no leak is found, the next step is to replace the spark plugs If the problem persists, more tests need to be done to diagnose the problem, see "Possible Causes"Today a customer dropped off his 05 Chevy Silverado 53L pickup complaining of a rough running condition, black smoke coming from the tailpipe and a check

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 I'm working on my dad's 07 Chevrolet Suburban 53 LC9 with 285,000 miles This is a fun one so far, I've had no luck on fixing this so far Symptoms are a misfire at idle on cylinders 2, 4, 6, 8, P0300 on the scan tool B2 LTFT is around , LTFT on Bank 1 is around 0The P0300 code means that a cylinder (s) is misfiring or is randomly misfiring Start by checking for intake leaks; The po300 is a hard code to diagnoise I work at a chevy dealership, I see lots of Chevy 53's with p0300's Also there was a bulletin a whilr back to clean the ground going to the block, That was found to cause a po300 as well But I would look at a cylinder leakage test It will tell you if a vavle is hung open

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I have changed plug wires, spark plugs, crankshaft post sensor read more 01 Chevrolet Silverado 1500 48L Misfire, MIL Lamp on Posted to GM Driveability on 9/6/07 16 Replies Hello techs, the customer says Chevy 48L Vortec Common Engine Problems – Vortec 4800 V8 The 48 Vortec is a smallblock V8 engine produced by General Motors from The engines spanned from Gen III to Gen IV of the Vortec series before being phased out after 13 in favor of the 53 Vortec with Active Fuel Management The 48 Vortec had three different variations

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Skeer said Revving whilst underneath would prolly be best Click to expand fmkidd1 said I just hit em with my hand while the truck was off and i could hear the shit rattling around inside At idle it even sounded like a knockBecome a GMTruckscom Member Today! 11 Silverado 1500 P0300 Code Sign up for FREE!

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The P0300 code is a multiple cylinder misfire code I believe you already know that because you replaced the coils, wires A vacuum leak could cause that code to show up, so again, confirm there is no leak The P1400 code is something different but can indicate an vacuum issueP0308 CHEVROLET code tech notes The P0308 code means that the cylinder 8 is misfiring or is randomly misfiring Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 8 If the problem persists more tests need to be done to diagnose the problem, see "Possible Causes"

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